Bobbin for a textile machine

ABSTRACT

A yarn receiver such as a bobbin adapted to have yarn wound thereon to form a package, the receiver including a yarn receiving portion and yarn engaging means associated therewith for engaging the yarn to commence its winding on the receiver.

United States Patent [72] lnventors Charles C. Bell Warwick; Kurt W. Niederer, Saunderstown, R.1. [21] Appl. No. 728,637 [22] Filed May 13, 1968 [45] Patented Feb. 2, 1971 [73] Assignee Leesona Corporation Warwick, R.1. a corporation 01 Massachusetts [54] BOBBIN FOR A TEXTILE MACHINE 11 Claims, 2 Drawing Figs. 52 Us. c1 242/11s.3, 1 412421129 [51] Int. Cl B65h 75/18, DOlh 9/08 [50] Field of Search 242/18PW, 118.3,125.1;57/52,53,34T1' [56] References Cited UNITED STATES PATENTS 1,652,787 12/1927 McCallister 242/18UX Primary Examiner-Stanley N. Gilreath Assistant ExaminerWerner 1-1. Schroeder AttorneysA1bert P. Davis and Burnett W. Norton ABSTRACT: A yarn receiver such as a bobbin adapted to have yarn wound thereon to form a package, the receiver including a yarn receiving portion and yarn engaging means associated therewith for engaging the yarn to commence its winding on the receiver.

PATENTFH FEB 2 WI m E S OLR VI TEE E m m W M O & A RT AR. HU CK BOBBIN FOR A TEXTILE MACHINE This application is a division of application Ser. No. 534,081, filed March 14, 1966, now Pat. No. 3,403,866.

This invention relates to yarn receivers such as bobbin and relates, more particularly, to yarn receivers having improved means for engaging and commencing the winding of yarn thereon. One object of the present invention is to provide a yarn receiver such as a bobbin or like core adapted to have yarn wound thereon and having means thereon to commence winding the yarn on the receiver.

Other more specific objects and advantages will be apparent from the following detailed description when read in conjunction with the appended drawings in which:

FIG. 1 is a perspective view showing the bobbin of the present invention positioned on a spindle of a textile machine and prepared to wind up yarn; and

FIG. 2 is an elevational view of the bobbin of FIG. 1.

GENERAL DESCRIPTION A preferred embodiment of the invention will now be described. Viewing FIG. 1 the yarn receiver or bobbin is illustrated in use with a conventional spinning machine serviced by an automatic tender of the type fully disclosed in commonly assigned U.S. Pat. No. 3,403,866. Since the structure of said spinning machine and automatic tender form no part of the invention herein, only so much of these structures will be set forth herein as is deemed necessary to a full understanding of the present invention.

In general, the automatic tender, generally designated at 12 and fully set forth in aforesaid U.S. Pat. 3,403,866, is adapted to move horizontally in a cycle along a path adjacent the side or sides of a spinning frame spindle rail and ring rail of said spinning frame being designated at 14 and 16, respectively, in FIG. 1. This horizontal movement can be in any convenient manner and can relate to one or a plurality of spinning frames.

As fully explained in the cited patent, a sensing device on the tender l2 detects the absence of yarn Y at any spinning position and initiates a cycle to restore that position to operative condition. In response to the sensing device, the tender 12 brings itself to a stop in transverse registration with the position to be serviced, halts the rotation of the bobbin 10 and ultimately dons an empty bobbin on a spindle 18 as seen in FIG. I. The fixtures above the spindle 18 are retracted to clear the path thereto and the drafted roving issuing from the delivery set of draft rolls is snared, preferably by a vortex suction nozzle 20, and drawn down along a path extending adjacent the outside of the ring rail 16 to a point below that rail and held in such position. Next, the yarn Y is displaced from that path into partial wrapping contact with a ring 22 outer surface and the traveler 24 thereon for the ring 22 is propelled to be hooked over the strand. Then, the yarn Y is released from the vortex suction nozzle and resnared from the inside of the ring rail 16 by a second vortex suction nozzle and drawn downwardly to a point adjacent the spindle base, the vortex suction nozzle 26 being shown in dotted lines in FIG. 1 at its lowered position adjacent the base of spindle 18. Rotation of the empty bobbin is started and the yarn Y is caught on the bobbin and wound thereon. As more fully explained in the cited patent, and as a part of the overall threading up step as just described, a cutoff device 28 is provided for severing the yarn tail extending to vortex suction nozzle 20 when the yarn is chordally disposed on ring 22 as seen in FIG. 1.

With yarn Y securely lodged in the vortex suction nozzle 26 and with yarn Y and downwardly through the opening through ring 22 and alongside the spindle l8, bobbin 10 is placed on the spindle. With the bobbin in this position, attachment of yarn Y to the bobbin can be achieved in a very simple manner.

As seen in FIGS. 1 and 2, bobbin 10 of the present invention has a substantially cylindrical shank portion 30, and a base portion 32 connected therewith. The base portion is of frustoconical shape and is desirably covered with a frictional material suitable for retaining the yarn thereon. The base portion consists of upper side 44 and lower or bottom side 46. An axial bore 34 extends through portions and 32 to permit mounting of the bobbin securely on spindle 18 for rotation therewith by means of not herein shown.

To promote attachment of the yarn Y to the bobbin as said bobbin is rotated, a notch 36 in the form of an inverted V is formed in the periphery of base portion 32 as by cutting away a sector shaped portion thereof. Said notch may be disposed tangent to the axis of the bobbin. By virtue of the fact that the lower part of the notch is actually a flare or mouth substantially wider than the diameter of the yarn to be wound on the bobbin, the yarn Y is freely movable into the slot defined by the notch 36 and is thus engaged with the bobbin for winding thereon. Further, it will be seen in FIGS. 1 and 2 that both walls 38 and 40 which define the sides of notch 36, are sloped or inclined upwardly to an apex. Thus, irrespective of whether bobbin 10 is rotated in a right or left sense, the yarn is presented to the relatively wide mouth or of notch 36 by being lead or guided, firstly along the relatively smooth, generally uninterrupted rim 42 of base 32, and then into the notch along a one ofthe walls 38 or 40 or by both walls.

Thus, in practice with the arrangement of FIG. 1 yarn Y is held against the periphery 42 of base 32 by vortex suction nozzle 26 and rotation of the bobbin 10 causes the notch 36 to catch yarn Y and wind the same thereon, the end of yarn Y backwinding on the bobbin and pulling free of vortex suction nozzle 26 under the superior force developed by the rotation of the bobbin. Once rotation of the bobbin has been initiated, vortex suction nozzle 26 is retracted and lowered to its normal outof-the-way position.

We claim:

1. A yarn receiver including first and second ends and adapted to receive yarn thereon during rotation thereof, said first end having upper and lower sides and yarn engaging means thereat, said yarn engaging means including a mouth wider than the diameter of the yarn for reception of the yarn therein, said mouth communicating with a yarn receiving indented portion, said indented portion having a sloping surface inclined to guide the yarn from said mouth into said portion during rotation of the receiver, and said mouth and said sloping surface intersecting said upper and lower sides of said first end.

2. A yarn receiver as set forth in claim 1 wherein said first end is greater in diameter than said second end.

3. A yarn receiver as set forth in claim 2 wherein at least a portion of said first end is of frustoconical shape.

4. A yarn receiver as set forth in claim 1 wherein at least a portion of said first end is provided with a frictional covering for retaining the yarn thereon.

5. A yarn receiver as set forth in claim 1 wherein said mouth is disposed tangent to the axis of said bobbin.

6. A yarn receiver including first and second ends and adapted to receive yarn thereon during rotation thereof, said first end having upper and lower sides and a yarn engaging indentation therein, said first end further including a surface on which the yarn is guided to said indentation during rotation of the bobbin, said indentation including a mouth wider than the diameter of the yarn for reception of the yarn therein, said indentation having a sloping surface extending from said mouth inwardly toward the base of the indentation for controlling the yarn during its movement inwardly of said indentation, said mouth and said sloping surface intersecting said upper and lower sides of said first end, and the intersection of said sloping surface with said upper side of said first end defining a substantially smooth edge on which the yarn may be moved during its movement inwardly of said indentation.

7. A yarn receiver as set forth in claim 6 wherein said first end is greater in diameter than said second end.

8. A yarn receiver as set forth in claim 7 wherein at least a portion of said first end is of frustoconical shape.

9. A yarn receiver as set forth in claim 6 wherein at least a portion of said first end is provided with a frictional covering for retaining the yarn thereon.

10. A yarn receiver as set forth in claim 8 whereinsaid first end has a substantially uninterrupted yarn receiving surface.

11. A yarn receiver as set forth in claim 6 wherein said mouth is disposed tangent to the axis of said bobbin. 

1. A yarn receiver including first and second ends and adapted to receive yarn thereon during rotation thereof, said first end having upper and lower sides and yarn engaging means thereat, said yarn engaging means including a mouth wider than the diameter of the yarn for reception of the yarn therein, said mouth communicating with a yarn receiving indented portion, said indented portion having a sloping surface inclined to guide the yarn from said mouth into said portion during rotation of the receiver, and said mouth and said sloping surface intersecting said upper and lower sides of said first end.
 2. A yarn receiver as set forth in claim 1 wherein said first end is greater in diameter than said second end.
 3. A yarn receiver as set forth iN claim 2 wherein at least a portion of said first end is of frustoconical shape.
 4. A yarn receiver as set forth in claim 1 wherein at least a portion of said first end is provided with a frictional covering for retaining the yarn thereon.
 5. A yarn receiver as set forth in claim 1 wherein said mouth is disposed tangent to the axis of said bobbin.
 6. A yarn receiver including first and second ends and adapted to receive yarn thereon during rotation thereof, said first end having upper and lower sides and a yarn engaging indentation therein, said first end further including a surface on which the yarn is guided to said indentation during rotation of the bobbin, said indentation including a mouth wider than the diameter of the yarn for reception of the yarn therein, said indentation having a sloping surface extending from said mouth inwardly toward the base of the indentation for controlling the yarn during its movement inwardly of said indentation, said mouth and said sloping surface intersecting said upper and lower sides of said first end, and the intersection of said sloping surface with said upper side of said first end defining a substantially smooth edge on which the yarn may be moved during its movement inwardly of said indentation.
 7. A yarn receiver as set forth in claim 6 wherein said first end is greater in diameter than said second end.
 8. A yarn receiver as set forth in claim 7 wherein at least a portion of said first end is of frustoconical shape.
 9. A yarn receiver as set forth in claim 6 wherein at least a portion of said first end is provided with a frictional covering for retaining the yarn thereon.
 10. A yarn receiver as set forth in claim 8 wherein said first end has a substantially uninterrupted yarn receiving surface.
 11. A yarn receiver as set forth in claim 6 wherein said mouth is disposed tangent to the axis of said bobbin. 